Airdrops allow to earn money for free. They also allow to pay attention to the project and unite the community.
The ability to earn money on airdriops attract a lot of people to cryptocurrency and new projects.
Cryptocurrencies offer a lot of opportunities to earn money. One of such opportunity is participation in airdrops.
Many people participate in airdrops to get tokens of new and prospective projects for free. It attracts attention of many users.